Oil filter cartridge



y 1954 J. G. SISKAVITCH 2,634,763

OIL FILTER CARTRIDGE Filed June 8, 1951 INVENTOR dw/v 6% S/sA A w 76/9 jBY fl'I ATTORNEY Patented July 27, 1954 UNITED STATES ATENT OFFICE Thisinvention relates to a removable oil filter cartridge which isespecially adapted for use with oil filters, and has for one of itsobjects the production of a simple and efficient rechargeable andremovable oil filter cartridge which is so constructed as to trap waterand other impurities in the bottom of the cartridge and to feed thefiltered oil to a selected point of use.

A further object of this invention is the production of a simple andefiicient oil filter cartridge having a perforated cage at the bottomthereof which supports the fibrous filtering material and provides atrap to receive water, dirt and sludge which gravitate to the bottom ofthe filter through the fibrous filtering material.

Other objects and advantages of the present invention will appearthroughout the following specification and claims.

In the drawing:

Figure 1 is a side elevational view of the cartridge;

Figure 2 is a top plan view thereof;

Figure 3 is a vertical sectional View through a filter and cartridgecarried therein, certain parts being shown in section;

Figure 4 is a horizontal sectional view taken on line 44 of Figure 3;

Figure 5 is a horizontal sectional view through the cartridge taken online 55 of Figure 3;

Figure 6 is a fragmentary vertical sectional view of a modified form ofthe invention, wherein the inverted perforated cup-shaped cage isreplaced by a perforated filtering material supporting plate.

By referring to the drawing in detail, it will be seen that Itdesignates a filter container or housing A removable filter cartridge II is carried within the housing or container I0, as shown in Figure 1,and preferably rests upon the supports I2 which are carried in thebottom of the container or housing Ill.

The cartridge II comprises a casing I3 which preferably is cylindricaland is open at both ends. A bottom plate I4 closes the lower end of theeasing I 3 and is detachable from the casing to facilitate replacement,cleaning and assembly of parts. The plate I4 preferably fits into thecasing and is provided with a casing supporting flange I5 which abutsthe bottom end of the casing and extends flush with the outer face ofthe casing I3 as shown in Figure 3. An oil outlet pipe I6 extendsvertically through the housing I0 and through the hollow verticallyextending tubular member II which is fixed to the bottom plate I4.Suitable supporting washers I9 are carried by the pipe I6 and supportthe plate I4 and tubular member I'I of the cartridge I I in addition tothe supports I2. The outlet pipe I6 is provided with apertures I9 whichare preferably screened in the conventional manner as shown, and thepipe I6 is spaced from the interior of the tubular member IT, as shownin Figure 3.

An inverted cup-shaped perforated cage 20 havin a straight side wall 9rests upon the bottom plate I4 within the bottom of the casing I3 andthe side wall thereof is spaced from the inner face of the casing I3, asshown in Figure 3 to permit a free passage of liquid through the sidewall 9, and between the side wall 9 and the inner face of the casing I3.The cage 20 is preferably slightly less than one-half of the heighth ofthe casing I3. A retainin washer 2I surrounds the tubular member I! andrests upon the top of the cage 29. The space within the casing I3 abovethe cage 29 is filled with cotton waste filtering material 22, or rags,paper, or other fibrous Waste material may be used when desired. Thismaterial 22 does not extend between the wall 9 and the inner face of thecasing I3, thereby defining an unobstructed area therebetween, with thefiltering material 22 being located only above the cage 20. The spacebetween the wall 9 and the inner face of the casing 13 is relativelynarrow, as shown in Figure 3, thereby defining a relatively narrowpassage therebetween, and since the filtering material such as cottonwaste defined, becomes loosely matted together when saturated with oil,the waste material 22 will not enter the space between the walls 9 andI3 but will remain in the position shown; The tubular member I! isprovided with a plurality of apertures 23 which are located above thecage 20 and washer 2|. A suitable shielding screen 24 covers theseapertures 23, as shown in Figures 3 and 4.

A perforated removable cover plate 25 is preferably threaded upon theupper end of the tubular member I1 and fits into the upper end of thecasing I3 to retain the fibrous filtering material 22 firmly in placetherein, and also in contact with the top of the cage 20. The plate 25is provided with an abutment flange 26 which overhangs the top end ofthe casing I3, and the flange 26 extends fiush with the outercylindrical face of the casing I3, as shown in Figure 3.

A hinged bail 21 is carried by the cover plate 25 to facilitate thethreading and unthreading of the plate upon the tubular member H. Thebail 2'! also will facilitate the handling of the cartridge II. A coveror lid 28 closes the upper end of the housing I!) and the cover plate 25abuts the retainin washers 29 which are in turn engaged by the spring 30of the lid 28 to retain the cartridge I I in position within the housingl0.

It should be noted that the present invention is directed to theconstruction of the cartridge itself and not to the filter housing,since the cartridge may be used with filter housings of various types.

As shown in Figure 6, a perforated disc-like filtering materialsupporting plate 34 may replace the cage 20 which plate 34 rests upon anannular collar 32 carried by the central tubular member I1 A retainingWasher 2 I surrounds the member I! and rests upon the perforated plate34. Supporting screws 33 extend through the side wall of the casing 3 tosupport the edge of the plate 34. Suitable filtering material 22 issupported upon the plate 34 in a manner similar to that shown in Figure3. In the form shown in Figure 6, the plate 34 is preferably supportedat a distance from the bottom of the cartridgeequivalent to the top ofthe cage 20, shown in Figure 3.

It should be further noted that the cartridge may be readily assembledand disassembled for refilling or replacement, is easily handled, andprovides a maximum area to receive water, sludge, dirt and the like inthe bottom of the cartridge to insure the passage of filtered oildownwardly through the pipe i B. The oil to be filtered enters thehousing at 3|, passes through the top perforated plate 25, down throughthe filtering material 22 and the water, dirt, sludge and otherimpurities drainoff by gravity into the inverted perforated cup-likecage 20 in the bottom of the casing [3. The filtered oil will passthrough the apertures 23 into the hollow tubular member I! and then outthrough the screened apertures 19 down through the pipe 16. Heavyparticles and water will seek a lower level than that of the oil toaccomplish a proper separation. When the cartridge has been used foraselected period it may be replaced-or taken apart andcleaned, and thefiltering material 22 may be renewed.

Certain detail changes in the mechanical structure may be made Withoutdeparting from the spirit of the invention, so long as such changes fallwithin the scope of the appended claims.

Having described the invention, what I claim as new is:

1. An oil filter cartridge comprising a hollow casing having an innerface, a bottom plate abutting and closing one end of said casing, a-per-I foratediinverted cup-like cage having a fiat top and a verticalstraight side wall supported upon said bottom plate and extendingupwardly into said casing to define a trap area of material size withinsaid cage ,for receiving water, sludge, dirt and the like which settlefrom'oil passing through said cartridge, said side wall of said cagebeing spaced from the inner face of said casing and defining arelatively narrow passage therebetween, a fibrous filtering materialwhich becomes loosely matted together when saturated with oil supportedupon said fiat top within said casing only upon and above said invertedcup-like cage thereby defining an unobstructed area between said sideWall of said cage and the inner face of said casing, a central hollowtubular member carried by said bottom plate and extendin vertically ofand centrally of said casing, and a top perforated plate removably andadjustably mounted upon the upper end of said tubular member andengaging said fibrous filtering material for compressing and retainingsaid filtering material within said casing.

2. An oil filter cartridge comprising a hollow casing havin an innerface, a bottom plate abutting and closing one end of said casing, aperforated inverted cup-like cage having a fiat top and a verticalstraight side Wall supported upon said bottom plate and extendingupwardly into said casing to define a trap area of material size Withinsaid cage for receiving water, sludge, dirt and the like which settlefrom oil passing through said cartridge, said side wall of said cagebeing spaced from the inner face of said casing, a fibrous filteringmaterial which becomes loosely matted together when saturated with oilsupported upon said fiat top within said casing only upon and above saidinverted cup-like cage thereby defining an unobstructed relativelynarrow passage area between said side Wall of said cage and the innerface of said casing, a central hollow tubular member carried by saidbottom plate and extending vertically of and centrally of said casing, atop perforated plate removably and adjustably mounted upon the upper endof said tubular member and engaging said fibrous filtering material forcompressing and holding the fibrous filtering material in loosely mattedform within said casing, said top plate overhanging and abutting theupper end of said casing, the top and bottom plates and tubular memberconstituting means for holding the casing and contents thereof in rigid.assembled relation, said tubular ember having screened apertures formedtherein for draining filtered oil from the interior of said casingdownwardly through the tubular member, a bail carried by said top plateto facilitate the attachment thereof with said tubular-member, a drainpipe fitted in said tubular member, and said drain pipe having screeneddrain apertures to convey oil from the interior of the tubular memberinto the interior of said drain pipe.

References Cited in the file of this patent UNITED STATES PATENTS

